1. University of Maastricht; Department of Clinical Psychological Science; P.O. Box 616 Maastricht Netherlands 6200 MD
2. University of Bristol; Academic Unit of Psychiatry, Community Based Medicine; Cotham House, Cotham Hill Bristol Avon UK BS6 6JL
3. Porterbrook Clinic; Michael Carlisle Centre 75 Osborne Road, Nether Edge Sheffield UK S11 9BF